<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.nio.file.attribute.UserDefinedFileAttributeView" %>
<%@ page import="com.sun.java.util.jar.pack.Package" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %><%--
  Created by IntelliJ IDEA.
  User: dell
  Date: 2018/5/3
  Time: 16:25
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>用户列表</title>
</head>
<body>
<style type="text/css">

    table{border-collapse: collapse;

    }
    td{
        border: 1px;solid-color:#000 ;
        padding: 10px;
    }
</style>
<table>

    <tr>
        <td>编号</td>
        <td>用户名</td>
        <td>密码</td>
        <td>操作1</td>
        <td>操作2</td>
    </tr>

    <tr>
        <td>1</td>
        <td>wangmeng</td>
        <td>123</td>
        <td>删除</td>
        <td>更新</td>
    </tr>


    <%
        //脚本、3+1 从数据库中查数据
        Connection connection=null;
        Statement statement=null;
        ResultSet resultSet=null;

        String sql="select*from t_users";
        //加载驱动程序
        Class.forName("com.mysql.jdbc.Driver");

        connection= DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",
                "root",
                "sctu123456"
        );
    statement=connection.createStatement();
    resultSet=statement.executeQuery(sql);

        class User{
            int id;
            String username;
            String password;
        }

        List<User> userList=new ArrayList<>();
        while (resultSet.next()){
            int id=resultSet.getInt(1);
            String username=resultSet.getString(2);
            String password=resultSet.getString(3);

            User user=new User();
            user.id=id;
            user.username=username;
            user.password=password;

            userList.add(user);
    }

    resultSet.close();
        statement.close();
        connection.close();

        for (User u:userList){
            out.write("<tr>"+
                    "<td>"+u.id+"</td>"+
                    "<td>"+u.username +"</td>"+
                    "<td>"+u.password+"</td>"+
                    "<td>删除</td>"+
                    "<td>更新</td>"+
                    "</tr>");
        }
        out.write("<a href='userAdd.jsp'>添加用户</a>");
    %>

</table>
</body>
</html>